What steps are required, in regards to the Authentication Sources, in order to support this request?

A customer has acquired another company that has its own Active Directory infrastructure. The 802 1X PEAP authentication works with the customer’s original Active Directory servers but the customer would like to authenticate users from the acquired company as well.

What steps are required, in regards to the Authentication Sources, in order to support this request? (Select two.)
A . Create a new Authentication Source, type Active Directory.
B . Create a new Authentication Source, type Generic LDA
D . Add the new AD server(s) as backup into the existing Authentication Source.
E . There is no need to join ClearPass to the new AD domain.
F . Join the ClearPass server(s) to the new AD domain.

Answer: B,D